Evonik Roehm Gmbh

Evonik Rohm Gmbh

Roehm Gmbh & Co Kg

Rohm Gmbh

Roehm Gmbh Chemische Fabrik

Rohm Gmbh Chemische Fabrik

Roehm Gmbh

Evonik Operations Gmbh

Joachim Knebel

Robert Franke

Dirk Fridag

Thorben Schuetz

Wolfgang Klesse

Bardo Schmitt

Gerold Schmitt

Werner Ude

Guido Protzmann

Christine Maria Breiner

Thomas Kehr

Ralf Merbach

Volker Kerscher

Gerhard Koelbl

Harald Trauthwein

Dieter Tessmer

Klaus Gottmann

Doris Saal

Mario Gomez Andreu

Guenther Graeff

Guenther Lauster

Wilhelm Karnbrock

Guenter Schroeder

Klaus Lehmann

Maik Caspari

Benedikt Laux

Andrea Wittkowski

Volker Herzog

Martina Ebert

Matthias Beller

Ralf Jackstell

Peter J Arndt

Martin Trocha

Patrik Hartmann

Thorben Schütz

Klaus Dorn

Dirk Broell

Silvia Beyer

Christian Maul

Rüdiger Carloff

Gerhard Kölbl

Guenter Westhaeuser

John Hirsh

Martina Pfirmann

Ingo Sander

Dieter Bathen

Uwe-Martin Wiesler

Sabine Kömmelt

Rdiger Jelitte

Karlheniz Goll

Jurgen Omeis

Sigmund Besecke

Gaurang Dave

Hans-Gerhard Stadler

Ina Zwierzchowski

Hans-Jürgen Dillmann

Margarita Stein

Anne Grotevendt

Reinhold Martin

Brigitte Mess

Marianne Omeis

Thomas Ohl

Joachim Carl

Zhong Shen

Guenter Graeff

Sabine Koemmelt

Santa Maria Nuccio

Werner Spalt

Joachim Vetter

Gerald Dietrich

Günther GRÄFF

Günter Westhäuser

Günter Lauster

Günther Lauster

Andreu Mario Gomez

Chiew-Chiang Haw

Bededikt Laux

A process produces a (meth)acrylate ester mixture. The process includes reacting a glycerol formal isomer mixture with an alkyl (meth)acrylate in the presence of a catalyst.

Method for producing monomers from isomeric mixtures

Process for preparing (meth)acrylates of the formula (I)CH&#x2550;C(R)&#x2014;CO&#x2014;O&#x2014;R&#x2003;&#x2003;(I)in which Ris hydrogen or methyl andRis a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C-C)-aryl-(C-C)-alkyl radical;by reacting a (meth)acrylate of the formula IICH&#x2550;C(R)&#x2014;CO&#x2014;OR&#x2003;&#x2003;(II)with an alcohol of the formula (III)HO&#x2014;R&#x2003;&#x2003;(III)in the presence of an amount of a suitable catalyst which catalyzes the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization;the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in thatthe specific total oxygen input is less than or equal to 1.0 l/kg, measured in liters of oxygen per kilogram of (meth)acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25&#xb0; C. and a pressure of 101 325 pascal. The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

Process for preparing (meth)acrylates

The invention relates to a process for preparing methacrylic esters of hydroxyl-functional benzophenones and to their use. Methacrylated benzophenones (benzophenone (meth)acrylates) can be prepared in high purity by the process of the invention, in a simple way and in a high yield.

Method for producing methacrylated benzophenones

A novel process is described which allows N-isopropyl(meth)acrylamide to be obtained in high purity and yield in a simple manner, by reacting methacrylic anhydride with isopropylamine, optionally in a solvent.

Method for producing N-isopropyl(meth)acrylamide

The invention describes a composition, especially in the form of a 2-component system comprising (meth)acrylated polyether polyols and/or polyester polyols and/or (meth)acrylated hydroxy-functionalized triglycerides with an adjustable pot life, especially for cable potting compounds.

Reactive resins for cable sealing compounds

Process for preparing bicyclic or tricyclic (meth)acrylates by reacting (meth)acrylic acid with a bicyclic or tricyclic hydrocarbon which contains at least one double bond using montmorillonite as catalyst.

Method for producing bicyclic or tricyclic (meth)acrylates

Process for preparing (meth)acrylates of the formula (I)CH&#x2550;C(R)&#x2014;CO&#x2014;O&#x2014;R&#x2003;&#x2003;(I) The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

The present invention relates to the stabilization of (meth)acrylic monomers against premature polymerization during synthesis, storage and transport. The term '(meth)acrylic monomers' is understood to mean derivatives both of methacrylic acid and of acrylic acid.

Stabilized (meth)acrylic monomers

The present invention relates to a process for preparing (meth)acrylates, comprising the transesterification of a low-boiling ester of (meth)acrylic acid with a reactant alcohol in the presence of catalysts, which is characterized in that the transesterification is catalysed by a basic ion exchanger.

Method for the production of (meth)acrylic esters

The invention relates to a method for producing methacrylated benzophenones and to the uses thereof.

The present invention relates to a process for preparing polyalkylene glycol di(meth)acrylates by reacting polyalkylene glycol with (meth)acrylic anhydride, wherein the reaction mixture contains at most 0.5% by weight of metal compounds and/or amines, the reaction is carried out in the presence of polymerization inhibitors and the reaction temperature is at least 60&#xb0; C.

Method for producing polyalkylene glycoldi(meth)acrylates

The present invention relates to a process for preparing ethylene glycol dimethacrylate, which comprises transesterification of ethylene glycol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising lithium amide (LiNH) and lithium chloride (LiCl) is used as catalyst. The process of the invention makes it possible to prepare ethylene glycol dimethacrylate particularly inexpensively and in a very high purity.

Method for producing ethylene glycol dimethacrylate

The invention relates to a process for continuously preparing N-alkyl(meth)acrylamides by reacting alkyl(meth)acrylates with high-boiling amines. A catalyst activation and specific workup technique achieve product qualities which have not been achieved to date. In addition, very high space-time yields and overall yields can be achieved.

Method for continuously producing alkylamino(meth)acrylamides

The present invention relates to a coating composition comprising at least one photo-initiator and at least one (meth)acryl-polymer having units that are derived from (meth)acryl-monomers that have at least one double bond and 8 to 40 carbon atoms in the alkyl residue. The present invention furthermore relates to a monomer mixture comprising at least one (meth)acryl-monomer having at least one double bond and 8 to 40 carbon atoms in the alkyl residue and at least one photo-initiator monomer and a (meth)acryl-polymer that can be obtained by polymerization of said monomer mixture. The present invention furthermore relates to a method for producing a coating. The present invention furthermore relates to a coated object comprising a coating obtained by said method.

Coating composition, (meth)acrylic polymer and monomer mixture for producing the (meth)acrylic polymer

The present invention relates to a (meth)acrylate monomer of the general formula (I) in which Ris hydrogen or a methyl group, X is oxygen or a group of the formula NR' in which R&#x2032; is hydrogen or a radical having 1 to 6 carbon atoms, Ris an alkylene group having 1 to 22 carbon atoms, Y is oxygen, sulphur or a group of the formula NR&#x2033;, in which R&#x2033; represents hydrogen or a radical having 1 to 6 carbon atoms, and Ris an unsaturated radical having 8 carbon atoms and at least two double bonds. The present invention further relates to a process for preparing the monomers set out above, to polymers obtainable from this monomer mixture, and to coating materials which comprise the stated polymers.

(Meth)acrylate monomer, polymer and coating agent

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Alsbach-Haehnlein, Germany

Joachim Knebel